CN105557044A - Using broadcast position and transmit power from access points to form assistance data - Google Patents
Using broadcast position and transmit power from access points to form assistance data Download PDFInfo
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- CN105557044A CN105557044A CN201480050925.5A CN201480050925A CN105557044A CN 105557044 A CN105557044 A CN 105557044A CN 201480050925 A CN201480050925 A CN 201480050925A CN 105557044 A CN105557044 A CN 105557044A
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- 238000000034 method Methods 0.000 claims abstract description 49
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- 238000004891 communication Methods 0.000 description 11
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- 238000003199 nucleic acid amplification method Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 6
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- 238000006243 chemical reaction Methods 0.000 description 4
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
- H04W64/003—Locating users or terminals or network equipment for network management purposes, e.g. mobility management locating network equipment
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
- G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
- G01S5/0205—Details
- G01S5/0236—Assistance data, e.g. base station almanac
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
- G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
- G01S5/0252—Radio frequency fingerprinting
- G01S5/02521—Radio frequency fingerprinting using a radio-map
- G01S5/02524—Creating or updating the radio-map
- G01S5/02525—Gathering the radio frequency fingerprints
- G01S5/02526—Gathering the radio frequency fingerprints using non-dedicated equipment, e.g. user equipment or crowd-sourcing
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/08—Testing, supervising or monitoring using real traffic
Abstract
Systems, apparatus and methods for preparing assistance data in a location server from coverage report messages of one or more access points from a plurality of mobile devices are presented. Several mobile devices each collect information from and about one or more access points. This crowd-sourced information is sent from a mobile device to a location server and may include ranging information (such as RSSI or RTT) and/or broadcast information (such as broadcast position and/or transmit power level) and/or computed information (such as path loss). Using this crowd-sourced information, the location server may form assistance data for an assistance data database, which may later be tailored for and send to a specific mobile device.
Description
the cross reference of related application
The U. S. application case the 14/096th of by name " Usingbroadcastpositionandtransmitpowerfromaccesspointsto formassistancedata (using from the broadcast location of access point and transmitting power to form auxiliary data) " that subject application requires on December 4th, 2013 to apply for, the rights and interests of No. 853 and priority, by name " Usingbroadcastpositionandtransmitpowerfromaccesspointsto formassistancedata (using from the broadcast location of access point and transmitting power to form auxiliary data) " that subject application requires on September 19th, 2013 to apply in U.S. Provisional Application case the 61/880th, rights and interests under the 35U.S.C. § 119 (e) of No. 077 and priority, the full text of described U. S. application case and U.S. Provisional Application case is incorporated herein by reference.
Technical field
The present invention relates generally to for generation of the system of effective auxiliary data, equipment and method, and more specifically to utilizing the mass-rent position of access point and broadcast location and/or the transmitted power level of being broadcasted by access point to improve the position of access point in auxiliary data.
Background technology
Auxiliary data does not comprise the variable position of access point but comprises the static position of access point on the contrary.That is, each when auxiliary data is sent to mobile device, same fixed position is used as the position of access point.Mass-rent information from multiple mobile device is not used in the position calculating and improve access point.In fact, can't help mass-rent information by the broadcast location of access point own broadcast steadily and surely check or change.In addition, the transmitted power level of being broadcasted by access point is not used in the position of improving access point.Required is in order to improve the means of the position of access point in auxiliary data database based on the GNSS place of the broadcast location of access point, the broadcast transmission level of access point, the path loss between access point and multiple mobile device and described multiple mobile device.
Summary of the invention
What disclosed is the system for preparing auxiliary data, equipment and method.
According to some aspects, disclose for a kind of in location server for preparing the method for auxiliary data, described method comprises: according to mass-rent database for access point calculate mass-rent position; Determine the broadcast location of access point at broadcast access point; Information based on mass-rent position and broadcast location arranges the position of access point; The position of access point is saved in auxiliary data database.
According to some aspects, what disclosed is a kind of location server for preparing auxiliary data, described location server comprises: mass-rent database, it contains the multiple mobile device reports for multiple access point, wherein contains the place of mobile device and the identifier of access point from each mobile device report that multiple mobile device is reported; Auxiliary data database, it contains the position of each in multiple access point; And processor, it is coupled to mass-rent database and auxiliary data database and is configured to: calculate mass-rent position according to mass-rent database for each access point; Determine the broadcast location of access point at broadcast access point; Information based on mass-rent position and broadcast location arranges the position of access point; The position of access point is saved in auxiliary data database.
According to some aspects, what disclose is a kind of location server for preparing auxiliary data, and described location server comprises: for calculating the device of mass-rent position for access point according to mass-rent database; For determining the device of access point in the broadcast location of broadcast access point; For arranging the device of the position of access point based on the information of mass-rent position and broadcast location; For the position of access point being saved in the device of auxiliary data database.
According to some aspects, what disclosed is a kind of non-transitory computer-readable storage medium for preparing auxiliary data in location server, described non-transitory computer-readable storage medium comprises the program code be stored thereon, and it comprises the program code carrying out following operation: calculate mass-rent position according to mass-rent database for access point; Determine the broadcast location of access point at broadcast access point; The position of access point is set based on mass-rent position and broadcast location; The position of access point is saved in auxiliary data database.
Should be understood that those skilled in the art easily will understand other side from following detailed description, wherein show by means of explanation and describe various aspect.Graphic and detailed description is regarded as being illustrative and nonrestrictive in essence.
Accompanying drawing explanation
Only by means of example, embodiments of the invention are described with reference to graphic.
Fig. 1 is illustrated in the example of the mobile device in the middle of access point.
Fig. 2 shows the example content according to the coverage report message of some embodiments of the present invention.
Fig. 3 shows the multiple mobile devices from single access point Received signal strength.
Fig. 4 displaying is according to the program of the conversion coverage report message of some embodiments of the present invention for formation auxiliary data database.
Fig. 5 shows the broadcast from multiple access point.
Fig. 6 shows the broadcast from multiple access point according to some embodiments of the present invention.
Fig. 7 shows the example according to the mobile device in the middle of access point of some embodiments of the present invention.
Fig. 8 shows the example content according to the coverage report message of some embodiments of the present invention.
Fig. 9 shows being contained in for the information unit in the coverage report message of single access point according to some embodiments of the present invention.
Figure 10 shows that the conversion according to some embodiments of the present invention is used for the program of the coverage report message of auxiliary data database.
Figure 11 to 13 shows the method according to the position of the determination access point of some embodiments of the present invention.
Figure 14 to 15 shows the relative position according to some embodiments of the present invention.
Figure 16 shows according to the method in the location server of some embodiments of the present invention.
Figure 17 shows the element according to the location server of some embodiments of the present invention.
Figure 18 shows according to the method in the mobile device of some embodiments of the present invention.
Figure 19 shows the element according to the mobile device of some embodiments of the present invention.
Embodiment
The detailed description intention hereafter set forth by reference to the accompanying drawings is as being not intended to the description of each aspect of the present invention unique aspect that expression the present invention can put into practice wherein.There is provided every aspect described in the present invention only as example of the present invention or explanation, and it should not be interpreted as inevitably more preferred or favourable than other side.For the object provided thorough understanding of the present invention, describe in detail and comprise specific detail.But, it will be apparent to those skilled in the art that and can put into practice the present invention when there is no these specific detail.In some cases, well-known construction and device is shown in block diagram form to avoid confusion concept of the present invention.Initial and other descriptive term can only use for the object of convenient and clarity, and are not intended to limit the scope of the invention.
Place described herein and location determination techniques can be implemented in conjunction with following various cordless communication network: such as wireless wide area network (WWAN), WLAN (wireless local area network) (WLAN), wireless personal local area network (WPAN) etc.Term " network " and " system " usually use interchangeably.WWAN can be code division multiple access access (CDMA) network, time division multiple access access (TDMA) network, frequency division multiple access access (FDMA) network, orthogonal frequency-time multiple access (OFDMA) network, single-carrier frequency division multiple access access (SC-FDMA) network, Long Term Evolution (LTE) etc.Cdma network can implement one or more radio access technologies (RAT), such as cdma2000, wideband CDMA (W-CDMA) etc.Cdma2000 comprises IS-95, IS-2000 and IS-856 standard.TDMA network can implement global system for mobile communications (GSM), digital advanced mobile phone system (D-AMPS) or some other radio access technologies (RAT).GSM and W-CDMA is described in the document from the alliance of " third generation partner program " (3GPP) by name.Cdma2000 is described in the document from the alliance of " third generation partner program 2 " (3GPP2) by name.3GPP and 3GPP2 document can openly obtain.WLAN can be IEEE802.11x network, and WPAN can be the network of blueteeth network, IEEE802.15x or certain other type.Described technology also can be implemented in conjunction with any combination of WWAN, WLAN and/or WPAN.
Global position system (SPS) comprises ejector system usually, its through location to make entity can determine that it on earth or the place of top based on the signal from transmitter receipt at least partly.This reflector is usually launched the signal of repetition pseudo noise (PN) code through being marked with a set number chip and can be positioned at based on the control station on ground, subscriber's installation and/or spacecraft.In particular instances, these reflectors can be positioned on Earth's orbit artificial satellite (SV).For example, GLONASS (Global Navigation Satellite System) (GNSS) is trooped (such as, global positioning system (GPS), Galileo (Galileo), GLONASS or compass) in SV can launch signal through being marked with PN code, described PN code can be different from the PN code launched by other SV in trooping (such as, as in GPS, use different PN code for each satellite, or as in GLONASS, use same code on a different frequency).According to some aspect, technology presented herein is not limited to the global system of SPS (such as, GNSS).For example, technology provided herein can be applicable to various provincialism system or otherwise uses in various provincialism system through enabling, such as, the accurate zenith satellite system (QZSS) of Japan top, India's provincialism navigational satellite system (IRNSS) above India, the big-dipper satellite etc. of China top, and/or can with one or more whole world and/or provincialism navigational satellite system is associated or otherwise through enable for one or more whole world and/or various amplification systems that provincialism navigational satellite system uses (such as, satellite-based amplification system (SBAS)).Illustrate with example instead of limit, SBAS can comprise the amplification system providing integrity information, differential correction etc., such as Wide Area Augmentation System (WAAS), European Geostationary satellite navigation superposition service (EGNOS), multisatellite amplification system (MSAS), the auxiliary geographical amplification navigation of GPS or GPS and geographical amplification navigation system (GAGAN), and/or its fellow.Therefore, as used herein, SPS can comprise any combination of one or more whole world and/or provincialism navigational satellite system and/or amplification system, and other signal that sps signal can comprise SPS, similar SPS and/or be associated with this type of one or more SPS.
As used herein, mobile device is referred to as mobile radio station (MS) or subscriber's installation (UE) sometimes, such as, cell phone, mobile phone or other radio communication device, PCS Personal Communications System (PCS) device, personal navigation apparatus (PND), personal information manager (PIM), personal digital assistant (PDA), laptop computer maybe can receive other suitable mobile device of radio communication and/or navigation signal.Term " mobile device " is also intended to the device including (for example) being communicated with personal navigation apparatus (PND) by short-distance radio, infrared ray, cable connection or other connection, and no matter still at PND place, satellite signal receiving, assistance data reception and/or the process relevant to place occurs at device place.And, " mobile device " intention comprises all devices, comprise radio communication device, computer, laptop computer etc., described all devices can (such as) via internet, WiFi or other network and server communication, and no matter be at device place, at server place or to another device place that network is associated, satellite signal receiving, assistance data reception and/or the process relevant with place occurring.Any of above-mentioned a few person can operative combination also be regarded as " mobile device ".
Fig. 1 is illustrated in the example of the mobile device 100 in the middle of access point 200.Mobile device 100 (is also referred to as MS100 or MS
1100) " see " that some access points 200 (are also referred to as AP
1, AP
2, AP
3, AP
4, AP
5and AP
2200).Each access point 200 is broadcasted its SSID and (is shown as SSID
1, SSID
2, SSID
3, SSID
4and SSID
5service set) and its MAC Address (be shown as MAC
1, MAC
2, MAC
3, MAC
4and MAC
5media Access Control Address).SSID is network name, it typically is the readable text string of people.MAC Address is the unique identifier being assigned to access point 200.Coverage report message 120 can be sent to the location server 300 that report mobile device 100 receives what access point 200 by mobile device 100.
Fig. 2 show according to some embodiments of the present invention the example content of coverage report message 120.Coverage report message 120 is transmitted into location server 300 by mobile device 100 by access point 200 or cellular base stations.Can each access point of Received signal strength for having, coverage report message 120 is containing SSID and/or MAC Address.Coverage report message 120 also can contain ranging information, the RSSI (received signal strength indicator) that the WLAN such as sent between access point 200 and mobile device 100 divides into groups and/or RTT (measurement of round trip time).Coverage report message 120 also contains the information about mobile device 100, such as, such as (e.g.) the GNSS place 110 (GLONASS (Global Navigation Satellite System) place) determined by gps receiver (GPS receiver).
Fig. 3 shows the multiple mobile devices 100 from single access point 200 Received signal strength.Location server 300 can determine which mobile device 100 according to the large sampling of coverage report message 120 from particular access point 200 (such as, AP
2200) signal is received.In shown example, ten mobile device 100 (MS
1100, MS
2, MS
3, MS
4, MS
5, MS
6, MS
7, MS
8, MS
9and MS
10) send instruction AP recently
2200 at Broadcast SSIDs
2with MAC Address (MAC
2) coverage report message 120.Based on various the reported GNSS place 110 of mobile device 100, location server 300 can determine access point 200 (AP
2200) position 230.Determined position 230 can be polymerized with the position 230 determined in a similar manner to form the auxiliary data 322 for mobile device 100.
Fig. 4 shows according to the conversion coverage report message 120 of some embodiments of the present invention to form the program of auxiliary data database 320.Described program occurs in location server 300.Coverage report message 120 is received from multiple mobile device 100 at location server 300 place.Location server 300 is based on respective access points 200 but not to be recombinated in mass-rent database 310 coverage report message 120 by mobile device 100.For from 1 to N each access point 200 (such as, AP
2200), mass-rent database 310 is containing SSID and/or MAC Address (such as, SSID
2and MAC
2).Mass-rent database 310 is also containing the entry for each mobile device 100, and described mobile device 100 sends coverage report message 120 within a time period.For example, the entry for each mobile device 100 can contain ranging information, such as RTT and/or RSSI (such as, RSSI
1, RSSI
2..., RSSI
n) and GNSS place 110.
Next, location server 300 calculates mass-rent position 210 according to mass-rent database 310 for each respective access points 200.Location server 300 can be depending on operational information in wanted accuracy and mass-rent database 310 and uses the one in some modes to calculate mass-rent position 210 for access point 200.The GNSS place 110 of each mobile device 100 can be averaging by location server 300 together.Location server 300 comes the GNSS place 110 of each mobile device 100 of weighting by the inverse of received ranging information.For example:
Before calculating mass-rent position 210, the removable any outlier of location server 300, such as, have the mobile device 100 of maximum measure distance information (such as, RTT> threshold value).
Next, location server 300 determines position 230 according to mass-rent position 210.For example, location server 300 can only use mass-rent position 210 as determined position 230.Or mass-rent position 210 and the position (such as, from the list of access point) believed can combine or are averaging in mass-rent position 210 and described believed position by location server 300.Or when the distance when distance in the presence of all between package location 210 and the position believed is greater than a threshold value and between position is less than a threshold value, location server 300 can use mass-rent position 210 as determined position 230.
Finally, determined position 230 is saved in auxiliary data database 320 by location server 300.Auxiliary data database 320 is containing SSID and/or MAC Address and the determined position 230 for each access point 200.After a while, when auxiliary data database 320 is for preparing auxiliary data 322, location server 300 reads information from selected access point 200.Information in coverage report message 120, mass-rent database 310, auxiliary data database 320 and/or auxiliary data 322 can only containing MAC Address and without SSID.Or message and database can comprise MAC Address and SSID.
Fig. 5 shows the broadcast from multiple access point 200.Each access point can broadcast the beacon signal containing SSID and MAC Address.As demonstrated, first, first, second, third, fourth and fifth access point 200 (AP
1, AP
2, AP
3, AP
4and AP
5) Broadcast SSIDs and MAC Address (are respectively SSID separately
1/ MAC
1, SSID
2/ MAC
2, SSID
3/ MAC
3, SSID
4/ MAC
4, SSID
5/ MAC
5).
Fig. 6 shows the broadcast from multiple access point 200 according to some embodiments of the present invention.Except Broadcast SSIDs and MAC Address, access point 200 can broadcast location 220, transmitted power level or both.Broadcast location 220 can be pin-point accuracy, a little accurately or arbitrarily.For example, the erector of access point 200 can use pin-point accuracy GPS exploration instrument to survey at the some place of access point antenna.New access point 200 then broadcasts the broadcast location 220 of pin-point accuracy.Erector can use GPS place when larger uncertainty and/or point and access point antenna site are far away apart.This place is broadcast as broadcast location 220 can be considered a little accurately.Or erector mistakenly GPS place can be entered as access point 200 or factory default position can be broadcast as broadcast location 220 by access point 200.
The network of access point 200 can broadcast the various combinations of analog information or information as demonstrated.For in this example in Fig. 6 to 8 and 10, each in access point 200 (comprises the first access point (AP
1)) broadcast its SSID and its MAC Address.Second access point 200 (AP
2) also broadcast its position 220, described position 220 is by chance for pin-point accuracy is to active position a little accurately.3rd access point 200 (AP
3) also broadcast its transmitted power level.The output power levels at the reflector place in transmitted power level instruction access point 200.4th access point 200 (AP
4) broadcast its position 220 and its transmitted power level.5th access point 200 (AP
5) also broadcast its position 220, described position 220 is without setting, without calibration, factory default, mistake and/or arbitrary inoperative position by chance.Inoperative position can be greater than threshold distance apart with its physical location.For example, inoperative position can with the antenna of access point 200 at a distance of a block or farther.
Fig. 7 shows the example according to the mobile device 100 in the middle of access point 200 of some embodiments of the present invention.Mobile device 100 (MS
1100) " to see " or from multiple access point 200 (AP
1, AP
2, AP
3, AP
4and AP
5) Received signal strength.Each access point 200 broadcasts its SSID be configured and its unique MAC Address and (likely) its position 230 and (likely) its transmitted power level.Namely, each access point broadcast in example as in Fig. 6 the signal summarized.
Fig. 8 show according to some embodiments of the present invention the example content of coverage report message 120.Coverage report message 120 comprises MAC Address and/or its SSID of the access point 200 received for each.Coverage report message 120 also can contain out of Memory unit, such as, for broadcast location 220 and/or the radio transmission power level of access point 200.As described above, broadcast location 220 can be effective or invalid.Coverage report message 120 also can contain path loss and/or ranging information, such as, RTT between access point and mobile device 100 or RSSI value.The GNSS place 110 of coverage report message 120 also containing mobile device 100.
In this example, the various of coverage report message 120 information unit may combine: for the first access point 200 (AP
1) SSID
1, MAC Address (MAC
1) and RSSI
1value; For the second access point 200 (AP
2) SSID
2, MAC Address (MAC
2), effective broadcast location 220 and RSSI
2value; For the 3rd access point 200 (AP
3) SSID
3, MAC Address (MAC
3) and path loss values; For the 4th access point 200 (AP
4) SSID
4, MAC Address (MAC
4), broadcast location 220 and path loss values; And SSID
5, MAC Address (MAC
5), invalid broadcast location 220.
Fig. 9 shows being contained in for the information unit in the coverage report message 120 of single access point 200 according to some embodiments of the present invention.According to formula, coverage report message 120 is containing general access point (AP
m) and generally can contain (SSID
mand/or MAC Address (MAC
m)) and may containing ranging information and/or broadcast location 220 and/or radio transmission power level and/or path loss.At bottom line, for the coverage report message 120 of particular access point 200 containing MAC Address or equivalent address to identify access point 200 uniquely.If access point 200 is radio transmission power level also, the coverage report message 120 so for particular access point 200 can other designator containing path loss or distance, such as with access point 200 at a distance of much meters.
Figure 10 shows that the conversion according to some embodiments of the present invention is used for the program of the coverage report message 120 of auxiliary data database 320.Described program occurs in location server 300.Receive coverage report message 120 at location server 300 place from multiple mobile device 100, and described coverage report message 120 is saved in mass-rent database 310.
First, location server 300 recombinates coverage report message 120 to form mass-rent database 310.Location server 300 will be used for the information aggregation of common access point 200 together.For example, access point 200 is by some coverage report message 120 of being contained in from same or different mobile device 100.Each coverage report message 120 containing the entry being used for common access point 200 is flocked together.In shown example, for common access point 200 (such as, AP
2200) record contains unique identifier, such as, for the SIDD of common access point 200
2with MAC Address (MAC
2).Described record also contains respectively from MS
1, MS
2... and MS
nthe information received.For MS
1line containing, for example at MS
1place receive for AP
2rSSI
2, at MS
1place receive for AP
2broadcast location 220 and MS
1gNSS place 110.Depend on AP
2broadcast mode be consistent or change in the midway receiving coverage report message 120, the line for each mobile device 100 can be similar or different.In shown example, MS
2to MS
nthere is similar coverage report message 120.
Again as above with reference to described by figure 4, location server 300 calculates mass-rent position 210 according to mass-rent database 310 for each respective access points 200.Location server 300 can use the one in some modes to calculate mass-rent position 210 as described above.Next, location server 300 determines position 230 according to mass-rent position 210.Finally, determined position is saved in auxiliary data database 320 by location server 300.Location server 300 can use auxiliary data database 320 to produce auxiliary data 322 and auxiliary data 322 is sent to mobile device 100.
Be different from the embodiment of Fig. 4, the embodiment of Figure 10 can comprise broadcast location 220 and/or transmitted power level.In other words, access point can broadcast following beacon: (1) does not have broadcast location and transmitted power level; (2) there is broadcast location 220 but not there is transmitted power level; (3) there is transmitted power level position, not there is broadcast location; Or (4) have both broadcast location 220 and transmitted power level.Gained coverage report message 120 and mass-rent database 310 similarly neither can comprise broadcast location 220 and also not comprise transmitted power level, comprise broadcast location 220 or transmitted power level or comprise broadcast location 220 and transmitted power level.
If transmitted power level is contained in beacon, so mobile device 100 can calculate according to the difference of transmitted power level and received power level (such as, RSSI) and report path loss instead of report transmitted power level.Equivalently, path loss can be converted to distance (such as, in units of rice) and report this distance instead of path loss by mobile device 100.
As described above, once location server 300 receives coverage report message 120, so coverage report message 120 is recombinated and is ranked into the mass-rent database 310 sorted by access point by location server 300.Location server 300 can use this mass-rent database 310 as described above to calculate mass-rent position 210.
If access point 200 broadcasts its transmitted power level, so location server 300 converts any received ranging information (such as, path loss, RSSI and RTT) to distance.If access point 200 does not broadcast its transmitted power level but transmitted power level is that location server 300 is known, so location server 300 converts RSSI or its fellow to distance.The GNSS place 110 of this Distance geometry mobile device 100 forms circle (or spherical), and access point 200 is located along described circle (or spherical).Distance-GNSS place pairing from multiple mobile device 100 can be used for the position of trilateration access point 200.
In certain embodiments, if only the first subset report of mobile device 100 is used for the path loss (or other ranging information) of particular access point 200 and the second subset of mobile device 100 and does not report path loss for particular access point 200, the data so only from the first subset can use by location server 300 the mass-rent position 210 determining access point 200.In other embodiments, average or weighted average location is determined according to the first subset of the mobile device 100 of report path loss with the second subset of the mobile device 100 without path loss report.
In certain embodiments, only a distance threshold is used.This first distance threshold is used for the broadcast location 220 of mistake to distinguish with acceptable broadcast location 220 to come.In certain embodiments, when considering access point 200, mass-rent position 210 is compared with broadcast location 220 by location server 300.If two positions are separated by (being greater than the first distance threshold) too far away, so think that broadcast location 220 is mistake and ignore broadcast location 220.In certain embodiments, if having a contest (being less than the first distance threshold) in fruit two positions, so location server 300 can consider broadcast location 220 when determining the determined position 230 of access point 200.For example, determined position 230 can be set to broadcast location 220 by location server 300.Or determined position 230 can be set to mass-rent position 210 by location server 300.In yet another embodiment, location server 300 is averaging when determining the determined position 230 of access point 200 or weighting mass-rent position 210 and both broadcast location 220.
In certain embodiments, first distance threshold is used for the broadcast location 220 of mistake to distinguish come (as described above) with the broadcast location 220 of non-erroneous, and second distance threshold value is used for good and adjustable broadcast location 220 to distinguish with very good (nonadjustable) broadcast location 220 to come.Good and adjustable broadcast location 220 is correctable and imperfect close to mass-rent position 210 (in the first distance threshold but outer in second distance threshold value).In other words, determined position 230 is mass-rent position 210 and the average of both broadcast location 220 or the combination through weighting.On the other hand, determined position 230 not audient's package location 210 affect.In other words, determined position 230 is equal to broadcast location 220.
In a word, location server 300 concentrate and sequence from the coverage report message 120 of multiple mobile device 100 to form mass-rent database 310.Then, location server 300 calculates mass-rent position 210 according to mass-rent database 310 for access point 200.Location server 300 determines the determined position 230 of access point 200 according to the distance compared between mass-rent position 210 and broadcast location 220.Depend on described distance, determined position 230 is set to by location server 300: (1) mass-rent position 210 (distance > first distance threshold); (2) mass-rent position 210 and the average of broadcast location 220 or weighted average (first distance threshold > distance or the first distance threshold > distance > second distance threshold value); Or (3) broadcast location 220 (second distance threshold value > distance).This determined position 230 is inserted in auxiliary data database 320 by location server 300.Location server 300 obtains the target part of auxiliary data database 320 and described target part is sent to the mobile device 100 needing auxiliary data 322.
Figure 11 to 13 shows the method according to the position 230 of the determination access point 200 of some embodiments of the present invention.In fig. 11, by location server 300, method 400 determines whether access point 200 starts at 410 places in its position 220 of broadcast.At 420 places, if access point 200 does not broadcast its position, so determined position 230 is set to mass-rent position 210 by location server 300.At 430 places, but if access point 200 is in its position 220 of broadcast, so determined position 230 is set to broadcast location 220 by location server 300.
In fig. 12, method 402 is by determining whether access point 200 starts at 410 places again in its position 220 of broadcast.If access point 200 is not in its position of broadcast, so method 402 proceeds to as described above 420.If access point 200 is in its position 220 of broadcast, so method 402 proceeds to 412.At 412 places, location server 300 calculates the difference between mass-rent position 210 and broadcast location 220.If distance (distance > first distance threshold), so method 402 proceeds to 420.If distance nearly (the first distance threshold > distance), so method 402 proceeds to also describe 430 above.
In fig. 13, method 404 is by determining whether access point 200 starts at 410 places again in its position 220 of broadcast.If access point 200 is not in its position of broadcast, so method 404 proceeds to as described above 420.If access point 200 is in its position 220 of broadcast, so method 404 proceeds to also describe 412 above.At 412 places, if distance (distance > first distance threshold), so method 404 proceeds to 420.If distance nearly (the first distance threshold > distance), so method 402 proceeds to 414.At 414 places, location server 300 determines whether the uncertainty of mass-rent position 210 is less than Second Threshold.Or at 414 places, location server 300 determines whether the uncertainty of mass-rent position 210 is less than the uncertainty of broadcast location 220.Under arbitrary situation, if mass-rent uncertainty is less, so method 404 proceeds to 420, and if mass-rent uncertainty is comparatively large, so method 404 proceeds to 430,420 and 430 and is both described above.Finally, at 440 places, the position of the access point 200 in auxiliary data database 320 can be set to determined position 230 by location server 300.When request or when needing, the auxiliary data with determined position 230 can be sent to mobile device 100 by location server 300.
Figure 14 to 15 shows the relative position according to some embodiments of the present invention.In fig. 14, location server 300 is considered distance between mass-rent position 210 with broadcast location 220 and this distance is compared with the first distance threshold.When distance (distance > first distance threshold) (as demonstrated), determined position 230 is set to mass-rent position 210 and ignores broadcast location 220 by location server 300.When distance nearly (the first distance threshold > distance), determined position 230 is set to the combination of mass-rent position 210 and broadcast location 220 by location server 300.
In fig .15, location server 300 uses the one in two distinct methods to calculate determined position 230.In the first method, location server 300 compares the distance between mass-rent position 210 and broadcast location 220.Described distance compares with the first distance threshold and second distance threshold value by location server 300.When broadcast location 220 is greater than the first distance threshold (as demonstrated in Figure 14), ignores broadcast location 220 and mass-rent position 210 is used as determined position 230.When broadcast location 220 is less than the first distance threshold and is greater than second distance threshold value (as demonstrated), think that broadcast location 220 can accept but adjustable.That is, determined position 230 is set to the combination of mass-rent position 210 and broadcast location 220.When broadcast location 220 is less than second distance threshold value, think that broadcast location 220 enough accurately and do not adjust broadcast location 220.That is, determined position 230 is set to broadcast location 220.
In the second approach, location server 300 is considered overlapping uncertain.Time overlapping between the uncertainty of uncertainty in mass-rent position 210 and the uncertainty of broadcast location 220, determined position 230 is arranged in this overlapping region by location server 300.Determined position 230 is arranged on any along the line between mass-rent position 210 and broadcast location 220 and locates by location server 300.Described point can be the mid point of the line in overlapping region.Or described point can along described line but by uncertain weighting.Or described point can one end place of line in overlapping region, and described overlapping region contributes to less uncertain position.
Figure 16 shows according to the method 500 of some embodiments of the present invention in location server 300.At 510 places, location server 300 calculates mass-rent position 210 according to mass-rent database 310 for particular access point 200.For example, location server 300 can calculate: (1) latitude and longitude; (2) latitude, longitude and height above sea level; (3) latitude, longitude and uncertainty; Or (4) latitude, longitude, height above sea level and uncertainty.
Location server 300 more early may fill mass-rent database 310 by the coverage report message 120 received from multiple mobile device 100.Coverage report message 120 comprises the GNSS place 110 of information about the access point seen by mobile device 100 and mobile device 100.Coverage report message 120 can comprise the path loss between access point 200 and mobile device 100.Or or in addition, coverage report message 120 can comprise received power (such as, RSSI).Coverage report message 120 can comprise the broadcast location 220 of access point 200.
At 520 places, location server 300 determines the broadcast location 220 of access point 200 at broadcast access point 200.Whether mass-rent database 310 can broadcast its position 220 by means of flag or broadcast location 220 self instruction access point 200, and described broadcast location 220 can be associated with some mobile devices 100 or summarize once for access point 200.
At 530 places, location server 300 is based on the position 230 of the information determination access point 200 of mass-rent position 210 and broadcast location 220.Determined position 230 can be: (1) mass-rent position 210; (2) broadcast location 220; Or the combination of (3) mass-rent position 210 and broadcast location 220.Determined position 230 can based on (such as) compared to the first distance threshold or the first distance threshold and second distance threshold value position between distance, position average or weighted average, probabilistic overlapping region, probabilistic size or some probabilistic sizes.
At 540 places, the determined position 230 of access point 200 is saved in auxiliary data database 320 by location server 300.At 550 places, location server 300 optionally forms auxiliary data 322 from auxiliary data database 320.At 560 places, auxiliary data 322 is optionally sent to mobile device 100 by location server 300.
Figure 17 shows the element according to the location server 300 of some embodiments of the present invention.Location server 300 comprises mass-rent database 310, auxiliary data database 320, transceiver 340 and processor 350.Mass-rent database 310 is the thesaurus for the coverage report message 120 from multiple mobile device 100.Processor 350 calculates mass-rent position 210 according to mass-rent database 310 for respective access points 200.The position 230 determining respective access points 200 is also compared with broadcast location 220 in mass-rent position 210 by processor 350.Determined position 230 is saved in auxiliary data database 320 by processor 350.After a while, processor 350 accessing auxiliary data database 320 is to form auxiliary data 322 to send specific mobile device 100.Transceiver 340 receives coverage report message 120 from multiple mobile device 100, and described coverage report message 120 is forwarded to processor 350.Auxiliary data 322 is transmitted into individual mobile device 100 from processor 350 by transceiver 340.
Figure 18 shows according to the method 600 in the mobile device 100 of some embodiments of the present invention.At 610 places, mobile device 100 receives the broadcast location 220 of access point 200 from access point 200 self.At 620 places, the place of mobile device determined by mobile device 100.Step 610 and 620 can sequentially, continuously, or partially or completely perform overlappingly.
Square frame shown by a dotted line, and mobile device 100 optionally receives and processes transmitted power level.At 640 places, mobile device 100 receives transmitted power level from access point.At 650 places, received power level determined by mobile device 100.At 660 places, mobile device 100 calculates difference between transmitted power level and received power level to produce path loss values.
Whether no matter receive and process transmitted power level, at 630 places, the GNSS place 110 of the broadcast location 220 in coverage report message 120 and mobile device 100 is sent to location server 300 by mobile device 100.If feasible, so the path loss values in coverage report message 120 and/or received power level are also sent to location server 300 by mobile device 100.
Figure 19 shows the element according to the mobile device 100 of some embodiments of the present invention.Mobile device 100 comprises processor 130, access point receiver 140, GNSS receiver and reflector 160.Access point receiver 140 can measure ranging information, such as, from RTT and/or RSSI of each in multiple access point 200.Access point receiver 140 such as, from multiple access point 200 or many persons receiving broadcasting information, broadcast location 220 and/or transmitted power level.This information is forwarded to processor 130 by access point receiver 140.Processor 130 also receives the GNSS place 110 of mobile device 100 from GNSS receiver.Processor 130 produces coverage report message 120 and via reflector 160, coverage report message 120 is sent to location server 300.The GNSS place 110 of coverage report message 120 containing mobile device 100 and broadcast location 220, path loss and/or the received power level received.Access point receiver 140 and reflector 160 may be combined with into a transceiver.
Depend on application, implement method described herein by various means.For example, these methods can be implemented in hardware, firmware, software or its any combination.For hardware embodiments, processing unit may be implemented in one or more application-specific integrated circuit (ASIC) (ASIC), digital signal processor (DSP), digital signal processing device (DSPD), programmable logic device (PLD), field programmable gate array (FPGA), processor, controller, microcontroller, microprocessor, electronic installation, through design with other electronic unit performing function described herein, or its combination in.
For firmware and/or Software implementations, the module (such as, program, function etc.) performing function described herein can be used to implement described method.Any machine-readable medium visibly embodying instruction can be used for implementing method described herein.For example, software code can store in memory, and is performed by processor unit.Memory may be implemented in processor unit or is implemented on processor unit outside.As used herein, term " memory " refers to long-term, short-term, the volatibility of any type, non-volatile or other memory, and should not be limited to the type of the memory of any particular type or any certain number destination memory or the media of memory above.
If implemented in firmware and/or software, so can using described function as one or more instruction or code storage on computer-readable media.Example comprises coding has the computer-readable media of data structure and coding to have the computer-readable media of computer program.Computer-readable media comprises physics computer storage media.Medium can be can by any useable medium of computer access.Unrestricted as an example, this type of computer-readable media can comprise RAM, ROM, EEPROM, CD-ROM or other optical disk storage apparatus, disk storage device or other magnetic storage device, or can be used for storing in instruction or data structure form want program code and can by other media any of computer access; When using in this article, disk and case for computer disc are containing compact disk (CD), laser-optical disk, optical compact disks, digital versatile disc (DVD), floppy discs and Blu-ray Disc, wherein disk is usually with magnetic means rendering data, and CD laser rendering data to be optically.The combination of each above also should be included in the scope of computer-readable media.
Except being stored in except on computer-readable media, the signal on the transmitting media that also instruction and/or data can be comprised in communication equipment provides.For example, communication equipment can comprise the transceiver of the signal with indicator and data.Described instruction and data is configured to make one or more processor implement the claims the function summarized in book.That is, communication equipment comprises the transmitting media of the signal of the information with the function that instruction discloses in order to execution.In the very first time, the transmitting media comprised in communication equipment can comprise the Part I of the information of the function that execution discloses, and in the second time, the transmitting media comprised in communication equipment can comprise the Part II of the information of the function that execution discloses.
There is provided to the previous description of announcement aspect to enable any those skilled in the art carry out or to use the present invention.Those skilled in the art is by the easily apparent various amendments to these aspects, and General Principle defined herein can be applied to other side without departing from the spirit or scope of the present invention.
Claims (26)
1. in location server for preparing a method for auxiliary data, described method comprises:
Mass-rent position is calculated for access point according to mass-rent database;
Determine the broadcast location of described access point at the described access point of broadcast;
Information based on described mass-rent position and described broadcast location arranges the position of described access point;
The described position of described access point is saved in auxiliary data database.
2. method according to claim 1, wherein said mass-rent position comprises latitude, longitude and uncertainty.
3. method according to claim 1, wherein comprises the place of described mobile device for each mobile device from multiple mobile device for the described mass-rent database of described access point.
4. method according to claim 3, the described mass-rent database wherein for described access point comprises path loss between described access point and described mobile device further for each mobile device from described multiple mobile device.
5. method according to claim 3, the described mass-rent database wherein for described access point comprises received power between described access point and described mobile device further for each mobile device from described multiple mobile device.
6. method according to claim 3, wherein comprises the described broadcast location from described access point further for the described mass-rent database of described access point.
7. method according to claim 1, wherein comprises based on the described position that the information of described mass-rent position and described broadcast location arranges described access point:
Determine the overlapping region between the range of indeterminacy of described mass-rent position and the range of indeterminacy of described broadcast location; And
The described position of described access point is arranged in described overlapping region.
8. method according to claim 1, wherein comprises based on the described position that the information of described mass-rent position and described broadcast location arranges described access point:
Determine the overlapping region between the range of indeterminacy of described mass-rent position and the range of indeterminacy of described broadcast location; And
Based on lower uncertainty the described position of described access point is set to the one in described mass-rent position and described broadcast location.
9. method according to claim 1, wherein comprises based on the described position that the information of described mass-rent position and described broadcast location arranges described access point:
Determine to there is not overlapping region between the range of indeterminacy and the range of indeterminacy of described broadcast location of described mass-rent position; And
The described position of described access point is set to described mass-rent position.
10. method according to claim 1, wherein comprises based on the described position that the information of described mass-rent position and described broadcast location arranges described access point:
Calculate the difference between described mass-rent position and described broadcast location;
Described difference is compared to arrange with threshold value and compares; And
The described position that described access point is set is compared based on described.
11. methods according to claim 10, wherein comprise based on the described described position arranging described access point of comparing:
Determine that difference between described mass-rent position and described broadcast location is in described threshold value; And
Between described mass-rent position and described broadcast location, select that there is lower probabilistic described position.
12. methods according to claim 1, it comprises further form described auxiliary data from described auxiliary data database.
13. methods according to claim 12, it comprises further described auxiliary data is sent to mobile device.
14. 1 kinds for preparing the location server of auxiliary data, described location server comprises:
Mass-rent database, it contains the multiple mobile device reports for multiple access point, and each mobile device report wherein from described multiple mobile device report contains the place of mobile device and the identifier of access point;
Auxiliary data database, it contains the position of each in described multiple access point; And
Processor, it is coupled to described mass-rent database and described auxiliary data database, and is configured to:
Mass-rent position is calculated for each access point according to described mass-rent database;
Determine the broadcast location of described access point at the described access point of broadcast;
Information based on described mass-rent position and described broadcast location arranges the described position of described access point;
The described position of described access point is saved in described auxiliary data database.
15. location server according to claim 14, it comprises transceiver further, and wherein said transceiver is configured to be coupled to multiple mobile device to receive coverage report.
16. location server according to claim 14, wherein comprise the described place of described mobile device for each mobile device from multiple mobile device for the described mass-rent database of described access point.
17. location server according to claim 14, wherein said processor is through being configured to further form described auxiliary data from described auxiliary data database.
18. location server according to claim 17, wherein said processor is through being configured to described auxiliary data to be sent to mobile device further.
19. 1 kinds for preparing the location server of auxiliary data, described location server comprises:
For calculating the device of mass-rent position for access point according to mass-rent database;
For determining the device of described access point in the broadcast location of the described access point of broadcast;
For arranging the device of the position of described access point based on the information of described mass-rent position and described broadcast location;
For the described position of described access point being saved in the device of auxiliary data database.
20. location server according to claim 19, the device of the wherein said described position for arranging described access point based on the information of described mass-rent position and described broadcast location comprises:
For determining the device of the overlapping region between the range of indeterminacy of described mass-rent position and the range of indeterminacy of described broadcast location; And
For the described position of described access point being arranged on the device in described overlapping region.
21. location server according to claim 19, the device wherein for the described position arranging described access point based on the information of described mass-rent position and described broadcast location comprises:
For determining the device of the overlapping region between the range of indeterminacy of described mass-rent position and the range of indeterminacy of described broadcast location; And
For the described position of described access point being set to based on lower uncertainty the device of the one in described mass-rent position and described broadcast location.
22. location server according to claim 19, the device wherein for the described position arranging described access point based on the information of described mass-rent position and described broadcast location comprises:
For determining the device that there is not overlapping region between the range of indeterminacy and the range of indeterminacy of described broadcast location of described mass-rent position; And
For the position of described access point being set to the device of described mass-rent position.
23. location server according to claim 19, the device wherein for the described position arranging described access point based on the information of described mass-rent position and described broadcast location comprises:
For calculating the device of the difference between described mass-rent position and described broadcast location;
For described difference being compared with threshold value, the device compared is set; And
For based on the described device comparing the described position arranging described access point.
24. 1 kinds for preparing the non-transitory computer-readable storage medium of auxiliary data in location server, described non-transitory computer-readable storage medium comprises the program code be stored thereon, and it comprises the program code carrying out following operation:
Mass-rent position is calculated for access point according to mass-rent database;
Determine the broadcast location of described access point at the described access point of broadcast;
The position of described access point is set based on described mass-rent position and described broadcast location;
The described position of described access point is saved in auxiliary data database.
25. non-transitory computer-readable storage mediums according to claim 24, the program code of the wherein said described position in order to arrange described access point based on described mass-rent position and described broadcast location comprises the program code in order to described position to be set to described mass-rent position.
26. non-transitory computer-readable storage mediums according to claim 24, the program code of the wherein said described position in order to arrange described access point based on described mass-rent position and described broadcast location comprises the program code in order to described position to be set to described broadcast location.
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- 2014-08-18 JP JP2016531699A patent/JP6141532B2/en not_active Expired - Fee Related
- 2014-08-18 EP EP14761921.7A patent/EP3047690A1/en not_active Withdrawn
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| EP2527859A2 (en) * | 2004-10-29 | 2012-11-28 | Skyhook Wireless, Inc. | Location beacon database and server, method of building location beacon database, and location based service using same |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP6141532B2 (en) | 2017-06-07 |
| WO2015041783A1 (en) | 2015-03-26 |
| KR20160060076A (en) | 2016-05-27 |
| US20150080013A1 (en) | 2015-03-19 |
| JP2016536890A (en) | 2016-11-24 |
| EP3047690A1 (en) | 2016-07-27 |
| US9313767B2 (en) | 2016-04-12 |
| KR101699819B1 (en) | 2017-01-25 |
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